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‘The Royal Horticultural Society Horticultural Database’, available at www.rhs.org.uk| Plant name | Information |
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Penstemon 'Alice Hindley'
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Penstemon 'Andenken an Friedrich Hahn'
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Penstemon 'Apple Blossom'
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Penstemon 'Beech Park'
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Penstemon 'Cherry'
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Previously listed as _P._ 'Cherry Ripe' misapplied |
Penstemon 'Chester Scarlet'
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Penstemon 'Connie's Pink'
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Penstemon 'Evelyn'
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Penstemon 'George Home'
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Penstemon hartwegii
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Penstemon heterophyllus 'Catherine de la Mare'
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Penstemon 'Hewell Pink Bedder'
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Penstemon 'Hidcote Pink'
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Penstemon isophyllus
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Penstemon 'Margery Fish'
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Penstemon 'Maurice Gibbs'
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Penstemon 'Osprey'
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Penstemon 'Pennington Gem'
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Penstemon 'Port Wine'
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Penstemon 'Raven'
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© The Royal Horticultural Society 2011 / RHS Registered Charity № 222879/SC038262